Spectral Functions in QFT
arXiv:1505.04237
Abstract
We present a pedagogical exposition of some applications of functional methods in quantum field theory: we use heat-kernel and zeta-function techniques to study the Casimir effect, the pair production in strong electric fields, quantum fields at finite temperature and beta-functions for a self-interacting scalar field, QED and pure Yang-Mills theories. The more recent application to the UV/IR mixing phenomenon in noncommutative theories is also discussed in this framework.
Notes of a series of talks given in February and April, 2015 at CEFyMAP, UNACH (Tuxtla Gutiérrez, México) and at IFLP, UNLP/CONICET (La Plata, Argentina) as part of the project ME/13/16 (MINCyT and CONACYT)